Factor Energía vs Som Energia

Live Comparison • octobre 2026

A detailed head-to-head comparison covering rates, typical bills, pros & cons, and features to help you decide which is better for your home.

Our Verdict

Overall Winner: Lowest Typical Bill

For a typical Spanish household (3.6kW Potencia, 300kWh monthly usage), Som Energia is the cheaper option. Their Som - Tarifa Periodos tariff results in an estimated monthly bill of €80.72 (including taxes). This compares to Factor Energía's best option (Tarifa Fija Precio Único) at €101.90 per month.

Factor Energía Best Bill
€101.90
Som Energia Best Bill
€80.72

* Assumption: 3.6 kW contracted power, 300 kWh monthly usage (20% peak, 30% flat, 50% off-peak), including 21% IVA, 5.11% Electricity Tax, and ~€1 meter rental.

Best Flat Rate

Factor Energía is the only provider offering a true 24-hour flat rate (0.1879 €/kWh).

Best Time-of-Use Rate

Som Energia has cheaper off-peak hours (0.15 €/kWh vs 0.1922 €/kWh).

Scorecard Comparison

Metric (1-10)Factor EnergíaSom Energia
Price Competitiveness
7
7
Solar Suitability
8
9
EV Suitability
6
7
Simplicity
8
8
Customer Service
8
9
Transparency
8
10

Full Head-to-Head Comparison

Factor Energía

Factor Energía

4 / 5 (4,000+ reviews)
Founded1999
Customers300,000+
Energy100% Renewable

Pros

  • Premier fournisseur indépendant en Espagne
  • Énergie 100% renouvelable certifiée
  • Excellente application mobile pour le suivi
  • Structure de facturation très transparente

Cons

  • Attente au service client en période de pointe
  • Les prix fixes peuvent être légèrement plus élevés que les taux du marché
  • Présence principalement axée sur la péninsule

Available Tariffs

Factor Tarifa Respira

Est. Monthly Bill
€102.69
Energy (P1 / P2 / P3)
0.3177 / 0.2596 / 0.1922
€/kWh
Potencia (P1 / P2)0.075903 / 0.001987 €/kW
Solar ExportN/A
Fixed FeeNone

Tarifa Fija Precio Único

Est. Monthly Bill
€101.90
Energy (24h)0.1879 €/kWh
Potencia (P1 / P2)0.1041 / 0.1041 €/kW
Solar ExportN/A
Fixed FeeNone
Som Energia

Som Energia

4.5 / 5 (Local / Coop reviews)
Founded2010
Customers85,000+ members
Energy100% Renewable (Cooperative)

Pros

  • 100% Propriété communautaire et à but non lucratif
  • Transparence totale des prix et de la gestion
  • Excellente participation démocratique
  • Investit directement dans de nouvelles centrales renouvelables

Cons

  • Nécessite des frais d'adhésion initiaux de 100 € (remboursables)
  • Tarifs pouvant être légèrement plus élevés que les prix d'appel agressifs
  • Pas de gros budgets marketing

Available Tariffs

Som - Tarifa Periodos

Est. Monthly Bill
€80.72
Energy (P1 / P2 / P3)
0.249 / 0.169 / 0.15
€/kWh
Potencia (P1 / P2)0.082011 / 0.008096 €/kW
Solar Export0.03 €/kWh
Fixed FeeNone

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